TY - JOUR
T1 - Gain stabilization in Micro Pattern Gaseous Detectors
T2 - Methodology and results
AU - Renous, D. Shaked
AU - Roy, A.
AU - Breskin, A.
AU - Bressler, S.
N1 - Funding Information:
We are thankful to L. Arazi, M. Pitt, L. Moleri, A.E.C. Coimbra, P. Bhattacharya and E. Erdal, of our Research Group, for useful discussions. This research was supported in part by the I-CORE Program of the Planning and Budgeting Committee, the Nella and Leon Benoziyo Center for High Energy Physics, the Mel and Joyce Eisenberg-Keefer Fund for New Scientists and by a Grant No 712482 from the Israeli Science Foundation (ISF).
Publisher Copyright:
© 2017 IOP Publishing Ltd and Sissa Medialab.
PY - 2017/9/29
Y1 - 2017/9/29
N2 - The phenomenon of avalanche-gain variations over time, particularly in Micro Pattern Gaseous Detectors (MPGD) incorporating insulator materials, have been generally attributed to electric-field modifications resulting from "charging-up" effects of the insulator. A robust methodology for characterization of gain-transients in such detectors is presented. It comprises three guidelines: detector initialization, long gain-stabilization monitoring and imposing transients by applying abrupt changes in operation conditions. Using THWELL and RPWELL detectors, we validated the proposed methodology by assessing a charging-up/charging-down model describing the governing processes of gain stabilization. The results provide a deeper insight into these processes, reflected by different transients upon abrupt variations of detector gain or the irradiation rate. This methodology provides a handle for future investigations of the involved physics phenomena in MPGD detectors comprising insulating components.
AB - The phenomenon of avalanche-gain variations over time, particularly in Micro Pattern Gaseous Detectors (MPGD) incorporating insulator materials, have been generally attributed to electric-field modifications resulting from "charging-up" effects of the insulator. A robust methodology for characterization of gain-transients in such detectors is presented. It comprises three guidelines: detector initialization, long gain-stabilization monitoring and imposing transients by applying abrupt changes in operation conditions. Using THWELL and RPWELL detectors, we validated the proposed methodology by assessing a charging-up/charging-down model describing the governing processes of gain stabilization. The results provide a deeper insight into these processes, reflected by different transients upon abrupt variations of detector gain or the irradiation rate. This methodology provides a handle for future investigations of the involved physics phenomena in MPGD detectors comprising insulating components.
KW - Avalanche-induced secondary effects
KW - Charge transport and multiplication in gas
KW - Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)
UR - http://www.scopus.com/inward/record.url?scp=85030979919&partnerID=8YFLogxK
U2 - 10.1088/1748-0221/12/09/P09036
DO - 10.1088/1748-0221/12/09/P09036
M3 - Article
AN - SCOPUS:85030979919
SN - 1748-0221
VL - 12
JO - Journal of Instrumentation
JF - Journal of Instrumentation
IS - 9
M1 - P09036
ER -